Some traditional comic publishers also accept submissions. For example, DC and Marvel have submission processes, but they're very competitive. Independent comic publishers might be a bit easier to get into, but it depends on your style and genre.
Local schools or community centers might also be interested. They could incorporate the comics into their reading programs or recreational areas for students and visitors.
One great place to read light novels is in a cozy corner of your local library. Libraries usually have a good selection of light novels, and the quiet environment is perfect for getting lost in the stories. Another option is in a park on a sunny day. You can sit on a bench under a tree and enjoy the fresh air while reading. Also, your own bedroom can be a great place. You can make it as comfortable as you like, with soft pillows and warm blankets, and read without any distractions.
Archive of Our Own (AO3) is a great place. It has a vast collection of fanfictions across various fandoms. The tagging system is very detailed, which makes it easy to find exactly what you're looking for.
In my opinion, a mountain top is a really cool place to read light novels outdoors. You can get a great view while reading, and the fresh air at high altitudes is invigorating. Another option is a forest glade. It's quiet and surrounded by nature. You can listen to the birds chirping as you read. Also, a riverside is very nice. You can watch the flowing water and read at your own pace.
I think a cemetery at night might seem like an appropriate place, but it's not really safe or legal in most cases. So, perhaps a park bench under a big, old tree on a cloudy day could also be a good spot. The natural elements like the rustling of leaves and the gloominess can add to the mood while reading ghost stories.